Command-line utility for capturing VNC server screenshots
Command-line utility for taking VNC snapshots
vncsnapshot$ vncsnapshot -quality 9 192.168.1.100:5900 screenshot.png$ vncsnapshot -passwd mypassword 192.168.1.100:5900 output.jpg$ vncsnapshot -rect 0 0 800 600 192.168.1.100:5900 crop.png